Are willing to participate in this clinical study Are able to comprehend and give informed consent for participation in this study Have read, understood and signed an informed consent form Have been unable to achieve pregnancy after trying for 1 year or greater and who have unilateral or bilateral hydrosalpinges as evidenced by laparoscopy or ultrasound or HSG Have a Day #3 serum FSH<10, and Day #3 Estradiol<80 Recipient women undergoing a ovum donor cycle the donor must have a Day 3 serum FSH < 10 and Day 3 Estradiol < 80 Have an antral follicle count 10 or greater for both ovaries combined, if women using ovum donor (follicle count) will be based on eligible donor Have a desire to receive treatment for their HS Are willing to undergo a hysterosalpingogram (HSG) 3 months after Essure placement to confirm proximal tubal occlusion